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Structure-activity relationships of YM155 analogs. (A) Correlation analysis of Tanimoto distance of YM155 analogs. (B) Energy minimized 3D structure of YM155 with stick representation method colored by gray (backbone), white (proton), nitrogen (blue), and red (oxygen), respectively. (C) Electrostatic surface potential of YM155 analogs was colored by blue (positively charged region) and red (negative charged region) with ±5 scaled energy kcal/(mole*e) unit.
